Hmm, is it ? The cash-out option at Orbit/Betfair is basically the same like with GT, i.e. your profits get spread evenly among all outcomes. It's just not that convenient, because you can't decide with which odds you hedge, which is a little problem in fast moving markets. With Orbit/Betfair your cash-out will not get executed, when the odds for your profit position go up in the meantime - with GT you can just choose slightly higher odds from the beginning and be sure you get matched, albeit giving up some small percentage of your profits.